Rotary piston-pump.



G. E. GUY.

ROTARY PISTON PUMP.

APPLICATION FILED NOV. 26, 1915-- 1,250,860. I

FIG.2-

Patented Dec. 18, 1917.

2 SHEETS-SHEET l.

INVENTOR WITNESSES Patented Dec. 18, 1917.

2 SHEETS-SHEET 2 G. E. GUY.

ROTARY PlSTON PUMP APPUCATION FILED NOV. 26, 1915.

WITNESSES MM INVENTOR seer-en's. m, or 'ro'rzrimvinm, t

Bursar? risron-r I s men n ma. Patented Dec. is, 191?.

Application filed November 26, 1915. t'fi erlai'm'o. 88.5%

rangement of its parts, and eflicient in operation.

In the accompanying sheetdrawings I have illustrated the preferred embodiment of my invention. Figure 1'is a side elevation of thepump; Fig. 2 a horizontal sectional view taken on the line 11-11,- Fig. 1; Fig. 3 a vertical sectional view taken on the broken line III-111, Fig. 2; and Fig. 4 a cross-sectional view taken on the line IVIV,'Fig. 1.

1n the pump which I outer casing provided with intake and 'discharge chambers and orifices, and withpas-- sageways ari'ording a minimum res'stance to the flow of fluid to and from-such cl'iam-' here. To thecentralportion of the easing there is fixedly secured a multiple throw shaft, on one'axisof which there is rotatably' mounted a drum, provided with of radially arranged cylinders.- .On a'second axis of suclrshaft-a sleeve on equivalent member is rotatably mounted, such sleeve having pivotally connected to it suitable pistons adapted, to reciprocate within the drum cylinders to draw fluid into and discharge itiromsuch cylinders."

a' plurality De endin u on-the intended capacity of p g F i prejudicial efiect, rotate upon its respecthe pump, the number and arrangement -o the cylinders and pistons will vary.

the pump shown herein two sets of cylinders' and pistons'fa-re provided, the-"sets of pistons rotating on' axes disposed on opposite si'desof the axis of"rotation of-the cylinder drum, the arrangement being such that during the 5 operation of the pump there will be' a balance of. the internal forces/Provision is made within the one ing to'causetlie fluid to act upon theopposite ends ofthe drum-,jthus' preventing'sueh end thrusts as would otherwise ca'u'seundue 2| 1 I: and W410i wear oi the provide there isarr ofthe pump. Finally, the connections for dr v ng the drumare such .as to relieve the drivmgshaft from lateral strain and the pre udic al e'flects attending'it. I Referring to the embodiment of theinvention illustrated inthe drawings, the easing comprises a' substantially cylindricalshell 1 and end plates 2 and 3, the shell 1 being provided with a laterally extending base portion 4. -Before describing the arrangement and formation of fluid'chambers and passageways within the casing, I will explain the internal construction of the pump. The end late 2 is provided with a cylindrical bloc -5 having an eccentric longitudinal bore adapted to receive and firmly hold an end 6- ofa multiple-throw shaft 6, 6", 7. This shaft, as'will be readily observed, is suitably pro' ided'with lllbllCik- 111011 ducts leading to tie several bearing portions thereof. The axis of the central section 7 of said shaft coincides with the center or axis of thee lindrical casing 1, and the axes of the ad oining sections are parallel with, and lie on opposite sides of,

that of the central section, as in Figs. 2 and 4. I

Rotatably mounted on the shaftsection 7 clearly shown is'a drum 8 provided with two sets of ra'-- dially arranged cylinders 9 and 9; while on the shaft sections 6 and 6' there are rotatable sleeves 10 and 10, respectively. To the sleeve 10 there are a pivotal] y connected, through links or rods 11, istons 12, corresponding in number to t e cylinders 9, and ada ted to reciprocate in such cylinders, an in the same manner the sleeve 10 is connected'to pistons 12. To the end that each sleeve may, without binding or other tive' axis oi" shaft section, simultaneously with the rotation of the drum 8 upon the .plane including the axes of the shaft sec- .tions 6, 6 7 with substantiallycrescent shaped intake and discharge chambers. As;

. shown particularly in Fig. 3, there is an intake chamber 14 in the upper andfa dis: charge chamber in the lower portion? of the casing '1 adjacent to the cylinders 9, and an intake chamber 14 in the lower and a discharge chamber 15 in the upper pdrti'on of swarmin atltacent to the eyh meters 9% Between the intake vand dis. charge chambers 14 and 15', the casing, as seen in Big. 4, bows inwardly to meet the drum 8,- thus forming chamber separators l6 andjl? ofi widths greater. than the diame;

' ter of the cylinders-9. In atsirnilar manner the chambers, 1.4? and 15; are likewise. divided by separators 16 and 1Z3 An inlet? .orifice' l8. communicates directly with the t ake mber 5 and n utl ifice 1,9. with .the .discha g; chamber-15 Finally, theintalre cliaimbets 1%. and-14f: areponnrctsd Witheaeh' other and with. the-inle orifice .8 b m t a7 p r res swee as.

se g

5 -2 Q. hi h it OiKaVing shaft- 2 w blr ecured. Thatsuch Silva-ft" mb whee i entbe ubject-tn lateral strain, it is preferably d.rive b a hell dag??? i yfi Q otherwiseseeured to the shaft, an rotatablypmonnted', through ball bearings. :28 ;up on a laterally extending boss 29 oi the casing end-plate?- At- -wi j s be UJIdQI'liQQQ thebell 27 may: be driven by a belti shaft or. any. other suitable-.drirenieon HQQUOIL, v 7

As already stated, provisionis triads. to cause .thefluid; .to act, on the. opposite ends of the; drnm prevent an unbalanced-thrust s wfi F r ru n e I pret rahlvr shepe the end casmg; platesflandh as to m, W hs r m p e esfl nd fitt d nnularhamb 3 T e uid t a n eitherthe intake or discharge. chambersmay belet into such end balance chambers and this. either through such slight space as there must necessarily be between the-end casing plates Qand 3 and theadjacentdrum plates 22 and 2 orsuitable by-passes32 and 3.3- may,- as shown in Fig. 3, be formed in the platesQand 3-and the shell 1.;

The operationof the pump isas follows-.2 The driving shaft- 26-is rotatedto cansethe drum 8 to revolve in a left hand direction as viewed in Fig, t fionsidering the set 05 menses pistons and cylinders shown in such figure, the pistons, 12 will, as. they move from the rightrtd the lefh of the intake chamber 14: bemov'e'd 'in'wardIy and thereby draw fluid into theirrespective cylinders 9. At the extreme left position, each piston is at its maximum inward position, and in such posithan the cylinder is closed by the separator 16 ner; a thoughwith a reverse.- arrangement;

Qt ntakeand disch rgeeh mbn s. the piss tone 12? opera e within thetqvlmders 5% Asis; readily apparent, thesdrnm 8,. and he-sleeves .101 and 10* with. theirconnected pis s,.eecb rotate si aneously; on their respective es. so that. thereis not unbalaim d centri ugalaction on the multiple threw-shaft Furthermore-the intake and dlsebarae b arnbers for each set; or, pistnns and cylinders are disposed on opposite sides oat-the pump setmt the internal forces ot' the fltttd are b a es-h Ailsastbe arrangemeat of s d chambers: and ond-altsis such hat. ime a a: entmeons flew of the. fluid Witbet miniature. r sis ance thereto.

According-tethe proaision at the patent statu ties I, have described the. principle and" neratmn otmy inversion; tog ther with the mechanism which I new consider-ftp re sent the best embadiment of my.- int'entron. wev r, I de ir o have-it understood that; he meehfi m hown t. nly lllns ratires and tha the inven ion ay e nre tia d br t r-means.

lr eim aarnyinre tien: V v n Enos rotary piston pump, the cnmbines tron of a casing; hasiii gacylindricnl inner;

Wellsa-shaftsecuredatberetnegainst imitation and-h ving a central se tion w h annals wgc dent withit-bat at said. inner. Wall and me; w mm g:- we sections with areae en ne tn and on oppn ite sides: of aid entral eet ex a drum r atably mounted n: said c n al shaft see anand pr videdwith' twosetsot ad al y arranged cylindem sleeves rota-tably mounted on said end shaft eetwnase e ntp stensrec p eatory. in said cylinders and having. link; connect on with said sleeves and mean-stop rotating said rums Said asing b inepr v dedi i h nlet: and outlet orifices andwithan intake and. discharge. chamber on opposite sides of eachot said sets of cylinders;

2. In a rotary piston pumptthe-combina tion of a retaryi um provided with a plus rality of radially arrangedeylinders open at their outer ends, a slee e rotatablefon ax s eccentric to that obsaid-drllMPistons rec procatery in said cylinders .andhaying link naectiens tesaid sl eve- 51 easing lat" I tat roundingthe drum and proirided oh oppo In teaimoiiy wliereofI have hereunto set site sides thereof with intake and discharge my hand;

chambers, a rotatable driving shaft secured to said drum and projecting through the GEORGE casing, and a driving member rotatably Witnesses: v mounted on said casing; and connected to Ramona F. GUY,

said shaft. Bimxm HENRI. 

